Lathe



G. w. lsco-r1 LATHE March 16, 1943. 2,314,055

Filed Juiy 7, 1942 3 sheets-shea 1 Marchl, 1943. G W. SCOTT I LATHE Filed July 7, 1942 3 sheets-sheet 2 March 16, 1943. G, W SCTT LATHE Filed July -7, A1942 3 Sheets-Sheef 3 Patented Mar. 16,` 1943 UNITED STATES PATENT OFFICE a LATHE Gilbert W. scott, Jacksonviue, nl. Application July 7, 1942, Serial No. 450,045 1 claim. (01.142-15) tificial limbs, in duplicate, to the natural limbs of individuals having suffered the loss of either an arm or leg.

Another'object of this invention resides in the y particular assemblage of 'elements forming .the lathe.

A further object of this invention resides in the particular construction and association of the pattern following arm and artificial limb cutting wheel.

A still further object of this invention resides in the particular means forholding the pattern following arm and limb cutting wheel in inop erative position. v

Aside from the aforesaid objects this invention resides in the particular manner of feeding the material from which the artificial limb is being made to the cutting wheel.

In additionto the foregoing objects Ithis invention resides in the particular means for rotating the pattern and material from. which the artificial limb is being constructed.

Among the many objects of this invention is` the manner of mounting the pattern-and material from Which the articial limb is being constructed on the carriage.

With these and other objects in view this in- Fig. 6 is a similar View approximately on line 6-6 of Fig. l.

Fig. 7 is a detail side view of a portion of the frame and carriage showing a supporting roller.

Fig. 8 is an enlarged side View of a portion of the frame showing the pattern following arm and retaining lever therefor.

Fig. 9 is a plan View thereof.

Fig. l0 is a longitudinal sectional view approximately on line Ill- IIJ of Fig. 1.

In the present illustration of this invention the numeral 5 designates, in general, a lathe conf the instrumentality of its side-rails I3 which are retained in rigid spaced relation between the side-rails 9K by cross-pieces I4 for reciprocating movement throughout the length of the table 6.

Secured to the carriage, preferably adjacent its ends, are bearing blocks I5 adapted to rotatably A support the horizontally disposed shaft '8 which is provided with clamping heads I'I between vention resides in certain novel features of construction and arrangement of elements to be hereinafter more particularly set forth in the specification, illustrated in the accompanying drawings and pointed out in the appended claim and, while this disclosure depicts my present con-` ception of the invention, the right is reserved to resort to such changes in arrangement and corlstruction of elements as come within the spirit of the invention.

In the accompanying drawings forming a part of this application:

Fig. l is a plan view of the lathe. Fig. 2 is a longitudinal sectional viewthereof taken, approximately on line 2-2 of Fig. 1.

Fig. 3 is a plan view of the lathe with certain A elements removed to better illustrate the carriage reciprocating and cutting .wheel controlling means.

Fig. 4 is a detail perspective view of a portion of the frame showing the cutting Wheel and con- A trolling means therefor'.

Fig. 5 is a cross sectional view approximately on line 5-5 of Fig. 1.

which a limb pattern P and artificial limb forming piece of material M is removably retained on the shaft as by, threaded or other suitable meansI 8 on one end of the shaft.

*.Mounted on the carriage is an electric or other suitable type of motor E which is connected to y the aforesaid shaftl 8 by a train of gears I9 or any other Well known power transmitting means and, although the'shaft 8 is herein shown as so driven, it may be rotated by a manually operated crank or flexible shaft receiving its power from source beyond the lathe.

Journalled -beneath the table, at a suitable point throughout its length, is a laterally extendinghroller 20 around which is wound the medial portion of a cable 2| having its opposite ends attached to the cross-pieces I4 of the carriage by suitable tightening-elements 22,- said roller and cable 'providing means whereby the carriage is reciprocated upon turning a crank 23 connected to the roller.

Rigidly secured to one side-rail of the table, adjacent its medial pointI and in close proximity to one end'of the pattern P, is a bearing sleeve 24 through which extends a short shaft 25 having arms 26 and 21 secured to its ends, the former of which carries a feeler-head 28 adapted to bear against the pattern and follow its contour while rotating and moving toward the right hand end of the table.

Rigidly secured to the other side-rail of the table, adjacent one end of the material from which the artificial limb is to be constructed, is a bearing sleeve 29 through which extends a shaft 3U having its upper end secured to a flexible tube 3| of a flexible drive shaft 32 carrying a cutting Wheel 33 on its outer end and connected to an electric motor 34 mounted on the table. Secured to the opposite or lower end of the shaft 30 is an arm 35 which is connected to the arm 21 by a link 36 and, in order to yieldingly retain the feeler-head 28 and cutting wheel against the pattern and artificial limb forming material, respectively, a retractile coil spring 31 has one end connected to the arm 35 and its opposite end connected to a stationary part of the table.

In order to retain the feeler-head and cutting wheel in inoperative position so the pattern and artificial limb forming material can be disposed on and removed from the carriage, a suitable stop-lever 31 is mounted on the table adjacent the arm 26, the same herein being disposed in the path of the arm 26 subsequent to rotating it outwardly against the tension of the spring 31.

Each bearing block l5 is provided with a hinged cap 38 which is secured in closed position by a spring clip 39 or other suitable fastening means.

In cases where the individual has suffered the loss of one of his limbs, a cast is made of his natural companion limb and the cast so constructed is securely disposed on the shaft I6 together with the articial limb forming material with the contours thereof arranged in opposite radial directions from the center of the shaft and, thereby the feeler-head on one side of the table will follow the contour of the pattern and guide the cutting wheel against the articial limb forming material accordingly.

With this invention fully set forth, it is manifest that the natural limbs of individuals, having suffered the loss of one of their limbs, can be duplicated through the provision of this invention and, due to the simplicity of the assemblage of elements thereof, the cost of manufacture will be reasonable.

Having thus described my invention what I claim and desire to protect by Letters Patent is:

A lathe the combination of, a stationary table, legs supporting the table, rollers carried by the table, a carriage slidably mounted on the rollers, bearings carried by the carriage, a shaft removably mounted in the bearings and removably supporting an artificial limb forming material, a pattern removably mounted on the shaft in longitudinal alignment with the artificial limb forming material, an electric motor mountedY on the carriage, adjacent one end of the shaft, a train of gears connecting the electric motor to the shaft, heads on the shaft removably securing the pattern and aforesaid material on the shaft with their like contours disposed in opposite radial directions relative to the shaft, upright bearing sleeves rigidly secured on opposite sides of the table adjacent certain ends of the pattern and aforesaid material, short shafts disposed in said bearing sleeves, a follow-arm secured to the upper end of the shaft disposed in that bearing sleeve adjacent the pattern, a flexible tube secured to the shaft disposed in the other bearing sleeve, a feeler-head mounted on said arm and bearing against the pattern, a flexible shaft extending through said flexible tube, a cutting-wheel secured to the free end of the flexible shaft and bearing against the aforesaid material, arms secured to the lower ends of the short shafts, a link connecting said arms, an electric motor connected tothe flexible shaft, a spring simultaneously retaining the feeler-head and cuttingwheel in operative position, and means sliding the carriage on the table.

GILBERT W. SCOTT. 

